Soft bodies bouncing with collision
You must add to those soft bodies the "collision" physics type too, like :



It's required for softbody physics found another softbody type like obstacles. That's will bring you a new panel called "Collision". Inside "Collision" panel there is controls for softbody types if you want tweak. Usually the default values works nice.

Like you already have the scene filled with your falling men, and you require add that physics to everyone,  there is an easy way to archive this :


You must switch on the addon "Copy Attributes menu" (it comes with the basic blender). This activate a really useful copy menu.
Select all your softbody man except the last one with your collision  and softbody physics. (you can try to use "A" key and quit rest objects from scene using "Shift" for quit/add objects from your selection)
Select that last one (usually this is for Blender like select "the parent")
Then press "Control + C" and select "Copy modifiers" from menu. That will copy the modifiers (in this case, physics type) from that last one to all another selected ones.